Ok sorry for the length of this post, but here we go.
Bought a '99 ZX9R from a guy. Test road it and everything seemed fine except it was sluggish at low RPMs (thought it just needed new plugs[they had never been changed since this guy had it]). I buy it, ride it home, put it in the garage. Next day i try to fire it up and it just cranks. Sounds like the #4 cylindar is the only one evey trying to fire (and not reliabaly at that). So i figured that the plugs had finally fouled. Bought new plugs (ones recommened by service manual), put them in and crank it, still nothing, just cranks.
Thought maybe i was getting no fuel for some reason. Tested fuel pump, it works fine. Tested spark, they work fine also. I know it was getting air cause i had the trumpets opened to air. THe same #4 cylindar still seems to kinda half fire every once in a while while it is cranking.
This bike as it turns out has been running REALLY rich,so there is carbon in the cylindar, but still it should fire. I thought that I would get it started with some Ether, sprayed it in the trumpets, cranked it, now not even the #4 cylindar was firing. Ether evaporated and i put a little bit of fuel into the trumpets. Cranked it (this is the closest i ever got to starting) it sounded like a couple cylindars were burning but nothing started.
The valves were adjusted less than 3000 miles ago. However the previous owner thinks that perhaps the shop didn't do a very good job. I thought it was very odd that it ran, then just all of a sudden nothing the next day. Any help would be wonderful. Thanks.